chromatograph Articles
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Experimental Determination of LOD for VOCs in Ambient Air Measured by Auto-GCs and Comparison with Reference Methods
Abstract Automatic gas chromatograph (auto-GCs) manufacturers perform an experimental method for a simple, rapid, and low-cost detection limit evaluation for volatile organic compounds in ambient air. The principle is the estimation of a minimum area of a peak. It is a relevant area value that discerns a real peak from the ground noise. This experimental limit of detection is equal to the minimum ...
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Development of on-line and field dual TD GC – MS for automatic VOC monitoring on petrochemical sites
Ambient air is polluted by many semi-Volatile and Volatile Organic Compounds (SVOCs and VOCs) coming from anthropogenic and natural sources. VOCs from PAMS, TO14 and TO15 lists can be measured in many ranges of concentration, from pg/m3 up to mg/m3 depending on the location of the measurements. Due to the large number of molecules, the complete separation of all compounds is difficult to perform ...
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Development of on-line and field dual TD GC – MS for automatic VOC monitoring on petrochemical sites
Ambient air is polluted by many semi-Volatile and Volatile Organic Compounds (SVOCs and VOCs) coming from anthropogenic and natural sources. VOCs from PAMS, TO14 and TO15 lists can be measured in many ranges of concentration, from pg/m3 up to mg/m3 depending on the location of the measurements. Due to the large number of molecules, the complete separation of all compounds is difficult to perform ...
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Development of on-line and field dual TD GC – MS for automatic VOC monitoring on petrochemical sites
Ambient air is polluted by many semi-Volatile and Volatile Organic Compounds (SVOCs and VOCs) coming from anthropogenic and natural sources. VOCs from PAMS, TO14 and TO15 lists can be measured in many ranges of concentration, from pg/m3 up to mg/m3 depending on the location of the measurements. Due to the large number of molecules, the complete separation of all compounds is difficult to perform ...
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Semi-volatile organics in drinking water using EPA method 525.2 optimized for greater sensitivity
The US EPA Drinking Water Manual contains the methods used to identify and quantify regulated and unregulated organic drinking water contaminants. Included in this manual is Method 525.2, a Gas Chromatographic/ Mass Spectrophotometric (GC/MS) technique for the determination of semi-volatile organic compounds. Method 525.2 can be used for the identification and quantification of a group of ...
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Development of on-line and field dual TD-GC-FID/MS for automatic and continuous ambient air monitoring
Ambient air is polluted by many Volatile Organic Compounds (VOCs) coming from anthropogenic and natural sources. VOCs from PAMS, T014 and T015 lists can be measured in many ranges of concentration, from ng/m3 up to mg/m3 depending on the location of the measurements. Due to the large number of molecules, the complete separation of all compounds is difficult to perform using chromatographic ...
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Development of on-line and field dual TD-GC-FID/MS for automatic and continuous ambient air monitoring
Ambient air is polluted by many Volatile Organic Compounds (VOCs) coming from anthropogenic and natural sources. VOCs from PAMS, TO14 and TO15 lists can be measured in many ranges of concentration, from ng/m3 up to mg/m3 depending on the location of the measurements. Due to the large number of molecules, the complete separation of all compounds is difficult to perform using chromatographic ...
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Achieve Exceptional Resolution of PAHs, Including Several Isomer Sets Using SLB®-ILPAH Capillary GC Columns
originally published in Supelco®'s Analytix Reporter Journal Issue 1 2018 by Merck KGaA, Darmstadt, Germany Visit SigmaAldrich.com/ar-reg Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous in the environment. They belong to a group known as persistent organic pollutants (POPs). Monitoring is important because they are identified as carcinogens. Multiple isomers exist, which are ...
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Development of on-line and field dual TD-GC-FID/MS for automatic and continuous ambient air and odor monitoring
Ambient air is polluted by many Volatile Organic Compounds (VOCs) coming from anthropogenic and natural sources. VOCs from PAMS, T014 and T015 lists can be measured in many ranges of concentration, from ng/m3 up to mg/m3 depending on the location of the measurements. Due to the large number of molecules, the complete separation of all compounds is difficult to perform using chromatographic ...
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Development of on-line and field dual TD-GC-FID/MS for automatic and continuous ambient air and odor monitoring
Ambient air is polluted by many Volatile Organic Compounds (VOCs) coming from anthropogenic and natural sources. VOCs from PAMS, T014 and T015 lists can be measured in many ranges of concentration, from ng/m3 up to mg/m3 depending on the location of the measurements. Due to the large number of molecules, the complete separation of all compounds is difficult to perform using chromatographic ...
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Development of on-line and field dual TD-GC-FID/MS for automatic and continuous ambient air and odor monitoring
Ambient air is polluted by many Volatile Organic Compounds (VOCs) coming from anthropogenic and natural sources. VOCs from PAMS, T014 and T015 lists can be measured in many ranges of concentration, from ng/m3 up to mg/m3 depending on the location of the measurements. Due to the large number of molecules, the complete separation of all compounds is difficult to perform using chromatographic ...
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Development of on-line and field dual TD-GC-FID/MS for automatic and continuous Volatile Organic Compounds (VOCs) ambient air and odour monitoring
Ambient air is polluted by many Volatile Organic Compounds (VOCs) coming from anthropogenic and natural sources. VOCs from PAMS, TO14 and TO15 lists can be measured in many ranges of concentration, from ng/m3 up to mg/m3 depending on the location of the measurements. Due to the large number of molecules, the complete separation of all compounds is difficult to perform using chromatographic ...
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Volatile organic compounds emitted from hardwood drying as a function of processing parameters
During the drying of wood, volatile organic compounds are emitted. These emissions contribute, in the presence of nitrogen oxides and sunlight, to the formation of ground level ozone and other harmful photo-oxidants. Emissions of volatile organic compounds from the drying of birch sawdust in a spouted bed were analyzed with a flame ionization detector and with a gas chromatograph-mass ...
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US EPA Method 524.2 with the Tekmar Lumin P & T Concentrator and Thermo Scientific TRACE 1310 and GC/ISQ MS system
Abstract US EPA Method 524.2 is used primarily by environmental labs for the analysis of Volatile Organic Compounds (VOCs) in drinking water. While this method is effective at concentrating the trace levels of VOCs sometimes found in finished drinking water, it also tends to transfer significant quantities of water vapor to the Gas Chromatograph/Mass Spectrometer (GC/MS) due to the 4 minute ...
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Volatile Organic Compounds in Every Day Food
Abstract Volatile Organic Compounds (VOCs) have been analyzed in drinking water and pharmaceuticals extensively in recent years. Now, VOCs in food products have became a major interest among researchers. Utilizing an Atomx automated VOC sample prep system in conjunction with a gas chromatograph-mass spectrometer (GC/MS) will allow for the determination of VOCs in food products. The automated ...
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US EPA Method 524.2 with the Teledyne Tekmar Lumin P&T Concentrator and Agilent 7890B GC / 5977A MS
Abstract US EPA Method 524.2 is used primarily by environmental labs for the analysis of Volatile Organic Compounds (VOCs) in drinking water. While this method is effective at concentrating the trace levels of VOCs sometimes found in finished drinking water, it also tends to transfer significant quantities of water vapor to the Gas Chromatograph/Mass Spectrometer (GC/MS) due to the 4 minute ...
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US EPA Method 524.2 with the Teledyne Tekmar Lumin P&T Concentrator and PerkinElmer Clarus 600 GC/Clarus SQ8T MS
Abstract US EPA Method 524.2 is used primarily by environmental labs for the analysis of Volatile Organic Compounds (VOCs) in drinking water. While this method is effective at concentrating the trace levels of VOCs sometimes found in finished drinking water, it also tends to transfer significant quantities of water vapor to the Gas Chromatograph/Mass Spectrometer (GC/MS). To reduce the amount ...
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US EPA Method 624 with the Tekmar Lumin and the Agilent 7890B GC / 5977A MS
Abstract US EPA Method 624 is used primarily by environmental labs for the analysis of Volatile Organic Compounds (VOCs) in wastewater. While this method is effective at concentrating the trace levels of VOCs sometimes found in water, it also tends to transfer significant quantities of water vapor to Gas Chromatograph/Mass Spectrometer (GC/MS) instruments. To reduce the amount of water ...
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Automated Handling Techniques for the Analysis of Elevated Volatile Organic Compound (VOC) Concentrations in Soils Utilizing the Atomx Concentrator/Multimatrix Autosampler
Abstract This application note discusses the processes used in USEPA Method 5035 for solid waste as it pertains to concentration levels that exceed the working calibration range used for low level analysis. Typically 200µg/kg is chosen as the highest calibration level. Any sample that exceeds this level must be reduced in response to fall within the calibration range. In this case, the high ...
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US EPA Method 524.2 using the Teledyne Tekmar Atomx XYZ and Thermo Scientific ISQ 7000 Mass Spectrometry (MS) System Coupled with a Thermo Scientific TRACE 1310 Gas Chromatograph (GC)
Abstract US EPA Method 524.2 was used to determine the concentration of volatile organic compounds (VOCs) in drinking water. This method is effective at concentrating trace levels of VOCs, however it can also transfer a significant amount of water vapor to the Gas Chromatograph/Mass Spectrometer (GC/MS) due to the four-minute desorb time recommendation. The Teledyne Tekmar Atomx XYZ purge and ...
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